# @name    Days Left
# @desc    Shows elapsed/remaining days of the year as a 32x8 pixel grid
# @author  Hank_the_Tank / Claude
# @version 1.0
# @config  colorDone      color "Color: days elapsed"    default=#00AA00
# @config  colorLeft      color "Color: days remaining"  default=#202020
# @config  highlightToday bool  "Highlight today"         default=true
# @config  colorToday     color "Color: today"            default=#FFFFFF

class DaysLeft
  var colorDone, colorLeft, colorToday, highlightToday
  var filled          # number of "elapsed" pixels, recomputed once per day
  var lastDay         # last day() value we computed for

  def init()
    self.colorDone = store.get("colorDone")
    self.colorLeft = store.get("colorLeft")
    self.colorToday = store.get("colorToday")
    self.highlightToday = store.get("highlightToday")
    self.filled = 0
    self.lastDay = -1
  end

  def is_leap(y)
    return (y % 4 == 0 && y % 100 != 0) || y % 400 == 0
  end

  def day_of_year()
    var mdays = [31,28,31,30,31,30,31,31,30,31,30,31]
    var y = year()
    var m = month()
    var doy = day()
    var i = 0
    while i < m - 1
      doy += mdays[i]
      if i == 1 && self.is_leap(y)
        doy += 1
      end
      i += 1
    end
    return doy
  end

  def refresh()
    if hour() < 0 return end        # time not known yet at boot
    var d = day()
    if d == self.lastDay return end
    self.lastDay = d
    var total = self.is_leap(year()) ? 366 : 365
    var cells = width() * height()
    self.filled = self.day_of_year() * cells / total
  end

  def loop()
    self.refresh()
  end

  def draw()
    clear()
    var w = width()
    var idx = 0
    for y : 0 .. height() - 1
      for x : 0 .. w - 1
        var c = self.colorLeft
        if idx < self.filled
          c = (self.highlightToday && idx == self.filled - 1) ? self.colorToday : self.colorDone
        end
        pixel(x, y, c)
        idx += 1
      end
    end
  end
end

return DaysLeft()